Roof truss structure



Oct. 21, 1952 QGRO S 2,614,512

ROOF TRUSS STRUCTURE Filed June 7, 1950 2 SHEETSSHEET 1 Fig.

Roland c.6r0ss INVENTOR.

Oct. 21, 1952 R. c.'sRoss ROOF TRUSS STRUCTURE 2 SHEETSSHEET 2 File dJune 7, 1950 Roland C-Gross INVEN TOR.

Patented Oct. 21, 1952 "'rr cmuss I land C. Gross mg' ff v1.-ApplicationJune '7, 1950, Serial No. -1'66 ,5 75

This inventionrelates to a building structure and more particularly to"a; roof truss structure of the type as shown in the patent to Gilbert 0.Gross, 2,239,817 patented April 29, 1941. v

An object of this invention is to provide a roof truss structure thatwill readily support the weight of the roof thereon, and in which trussstructure is formed in a plurality of sections for ease in manufactureand assembly.

A further object of this invention is to provide a novel combination oftopping plates and truss structure which are mutually engaged bytelescoping or concentric means so as to provide means for easierassembly without decreasing the strength of the structure.

Still further objects of the invention reside in the provision of a rooftruss structure that is strong, durable, capable of being formed fromreadily available material, and which roof truss structure may be usedfor a variety of purposes such as armories, hangars, barns, or the like.

These, together with various ancillary objects of the invention whichwill become apparent as the following description proceeds, are attainedby this roof truss structure, a preferred embodiment of which has beenillustrated in the accompanying drawings, by way of example, wherein:

Figure 1 is a front elevational view of the roof truss structure shownin operative emplacement on the walls of a building structure which areshown in cross section, the roof of the building being partially shownin section;

Figure 2 is a perspective detail showing the manner in which the endunits of the roof truss structure are secured to the walls of thebuilding structure; 7

Figure 3 is a sectional detail showing the connection between thevarious elements of the invention as shown in Figure 2; v

Figure 4 is a vertical sectional view showing the manner in which thecentral truss units are secured to the end truss units; and

Figure 5 is a vertical sectional detail as taken along line 5--5 inFigure 1.

With continuing reference to the accompanying drawings wherein likereference numerals designate similar parts throughout the various views,reference numeral It! generally designates the foundations or footingson which the brick or block walls 12 are constructed. Secured on top 4of the walls l2 by any convenient means such as anchor bolts [4 is anailing strip l6 which may be formed of wood or any other suitablematerial.

By means of lag screws i8 a capping plate having a flange 22 thereon forengagement with 3 Claims. (ch16 the side of the nailing strip. ltj-iseeuree reggae nailingstript ,Upwardly and angularly extendin from thecapping plate 20 and secured thereto is a projecting member 24 which isformed from a cylindrical bar or rod or metal. This projecting member 24is adapted to be slidingly and encompassingly engaged by a hollowarcuate tubular member 26 of each of the end truss units which aregenerally designated by the reference numeral 28. A lower arcuatetubular element 30 is welded to the tubular member 26 and suitable bracemembers 32 extend between the tubular members 26 and 30. Other diagonalmembers 34 are provided for rigidifying the entire structure.Furthermore, there is attached to a projecting member receiving end ofthe and units 28 lugs 36, the purpose for which will be henceforthexplained.

The central truss unit as indicated generally at 38 includes an upperarcuate tubular member 40 which has positioned therein pins 42 forsliding or telescoping engagement with the arcuate tubular members 26 ofthe end truss units. The

lower tubular member is Welded to the ends of the gaging the stops orlugs 36 are eyes for engagement by a tension member 52 which includes aturnbuckle 54 for determining the tension thereon. Additionally, tensionmembers 56 havin turnbuckles 58 are terminally attached to the eye 50and to other eyes fillengaging the stops 48. Hence, there is constantlyapplied a tensionon the truss structures which urges them upwardly tocounteract the weight of the roof 62 which is secured to the upper edgeof cross beam 64 which are attached by means of hooks 66 to the tubularmembers 26 and 48. The upper ends of the hook members may be countersunkin recesses 68 formed in the cross beam 64 and may be held in positionby means of nuts 10. wise, the upper end of the hooks 66 may extendabove the beam 64.

Since from the foregoing the construction and advantages of this rooftruss structure are readily apparent, other description is believed tobe unnecessary.

Other- I However, since numerous modifications will readily occur tothose skilled in the art after a consideration of the foregoinspecification and as new is:

l. A truss structure for supporting a roof and adapted to be supportedby spaced substantially parallel wall structures comprising cappingplates having angularly extending projecting members, means securingsaid capping plates to said Wall structures, tubular arcuate end trussunits slidingly received over said projectin members, and

a central tubular arcuate truss unit terminally slidingly engaging saidendtruss units, tension means connecting the outer terminals of said endtruss-units, andte'nsion means connecting each terminal of the centraltruss unit to the outer terminal'of one of the end truss units.

2. A truss structure according to claim 1, wherein each of saidtensioning means comprises rods with end rings encircling saidterminals, and lugs on said terminals engaged by said rings and opposingthe tension exerted by said rods and rings.

3. A truss structure according to claim 1, wherein said truss unitscomprise, respectively, oppositely curved cross connected tubular-sides.

' .iR'oLANp' c. 'Gaoss.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 2,210,460Mackintosh Aug. *6, 1940 52,239,817 Gross Apr. 29, 1941 I .--FQREIGNPATENTS Number Country Date 539,250 Great, Britain 1941

